What kind of bush is this?

Hi, I am new to the forum and discovered it while searching for images of this bush I have growing in my yard. I want to plant a few more but I am not sure what it is? I am attaching a picture. It is very fragrant and has little white flowers.

 

Philadelphus (Mock jasmine).

Regards, Barbara.

 

Wow, that was quick. Thank you so much. Off to the nursery to locate! :o)